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Commission Calculator: Flat, Tiered and Commission Rate
To calculate sales commission, multiply sales by the commission rate: $12,000 in sales at 6% pays $720. For tiered commission, apply each rate only to the sales inside its tier. With 5% to $5,000, 8% to $10,000 and 10% above, $12,000 pays $250 + $400 + $200 = $850, an effective rate of 7.08%. The calculator below handles flat, tiered and rate-from-payout math.
Prepared by Prospyr · Reviewed October 3, 2026 · Free, no sign-up, runs in your browser
Retail, services or both, whatever the plan pays commission on.
Added to commission for total pay.
Commission earned
$720.00
Effective rate: 6% of sales.
Sales
$12,000.00
Total pay with base
$720.00
A math aid. Your written commission agreement controls how pay is calculated. Overtime, minimum wage and state rules can apply to commissioned staff; this is not legal or tax advice.
Commission formula: flat rate
Commission = sales × rate ÷ 100. Total pay = commission + base pay or draw. Effective rate = commission ÷ sales × 100, which equals the flat rate for a flat plan and shows what a tiered plan actually pays on average.
Tiered commission calculator: marginal and retroactive
Set the end of tier 1, the end of tier 2 and a rate for each of the three tiers. Switch between marginal and retroactive to see how much the plan design changes pay for the same sales.
| Sales | Flat 6% | Marginal (5/8/10%) | Retroactive (5/8/10%) |
|---|---|---|---|
| $4,000 | $240 | $200 | $200 |
| $7,500 | $450 | $450 | $600 |
| $12,000 | $720 | $850 | $1,200 |
Tiers at $5,000 and $10,000. Marginal at $7,500: $250 + 2,500 × 8% = $450. The figures are illustrations, not a recommended plan.
Sales commission calculator for retail and service sales in a practice
Practices usually pay commission on retail skincare, memberships, packages or a provider's service revenue. The two choices that move the cost most are the base (gross sales or sales net of discounts and product cost) and whether tiers reset each month. Write both into the plan so staff and the owner read the same number.
For injector plans that mix hourly pay, commission and per-unit pay, compare the plans side by side with the nurse injector pay calculator. For payouts tied to results, see the bonus calculator. Prospyr's analytics reports sales by provider so the commission inputs come straight from the record.
Commission and the law: withholding and overtime
IRS Publication 15 (2026) lists commissions among supplemental wages. Under 29 U.S.C. 207(i), a retail or service establishment can exempt an employee from overtime only if the regular rate is above one and one-half times the minimum hourly rate and more than half of compensation for a representative period of at least one month comes from commissions. A draw or guarantee does not change whether a bona fide commission counts as a commission under the statute.
This page does the math only. Have an employment attorney review any commission plan before you roll it out.
Frequently asked questions
How do you calculate sales commission?
Multiply the sales amount by the commission rate as a decimal. $8,000 in sales at 7.5% is $8,000 × 0.075 = $600. If the plan has a base pay or draw, add it for total pay.
How do you calculate a commission rate?
Divide the commission by the sales and multiply by 100. A $640 payout on $8,000 in sales is 640 ÷ 8,000 = 8%. Use the Find the rate tab to do this for any payout.
What is tiered commission?
Tiered commission pays a higher rate as sales pass set thresholds. In a marginal plan each rate applies only to the sales inside its tier. In a retroactive plan, reaching a tier moves all sales for the period to that tier's rate, which pays more at the threshold and can create a cliff.
What is the difference between marginal and retroactive tiers?
Marginal tiers work like income tax brackets: each rate covers only its slice. Retroactive tiers apply the highest rate reached to the whole amount. On $12,000 with 5%, 8% and 10% tiers, marginal pays $850 and retroactive pays $1,200.
What is a typical commission rate for retail skincare or services?
There is no authoritative published rate, and practices set their own. Rates vary with margin, product mix and whether the commission is paid on gross sales or on sales net of product cost. The numbers in the calculator are placeholders; enter your own plan.
Are commissions taxed differently than regular pay?
For withholding, commissions are supplemental wages under IRS Publication 15, so employers may withhold a flat 22% federal rate when they are paid separately from regular wages. They are also subject to Social Security and Medicare tax. Your payroll provider handles the exact withholding.
Do commissioned employees get overtime?
Often yes. Section 7(i) of the FLSA exempts certain retail or service establishment employees from overtime only if their regular rate is more than one and one-half times the minimum wage and more than half of their pay over a representative period of at least a month comes from commissions. Check with an employment attorney or your state labor office before relying on it.
Sources and scope
- 29 U.S.C. 207(i): Employees of retail or service establishments paid commissions (Cornell LII)
Overtime exemption conditions: regular rate above one and one-half times the minimum hourly rate, and more than half of compensation from commissions over a representative period of at least one month.
- IRS Publication 15 (2026): Section 7, Supplemental Wages
Defines supplemental wages to include commissions and bonuses; 22% flat withholding option.
A math aid, not legal or tax advice. Your signed commission plan and applicable wage-and-hour law decide what an employee is owed.